Multi-Position Flashlight Head for Consistent Helmet Downlight
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Solution Overview
Problem
Existing flashlights with both forward and downward lights are limited in their versatility, as the direction of the downward light changes based on the side of the helmet they are mounted on, often interfering with other equipment or requiring multiple lights to maintain consistent downward illumination.
Innovation Solution
A flashlight design with a head that can be attached to the body in two positions, allowing the downward light to face opposite directions depending on the side of the helmet, and incorporating a dual-position bayonet fitting for secure attachment and a power source with a heat sink for efficient heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the flashlight is mounted on the side of a helmet with a fixed head position, then the downward light illuminates in a specific direction, but the illumination direction changes based on the side of the helmet, interfering with other equipment or requiring multiple lights
Solution Approach 1:
The head of the flashlight is made rotatable relative to the body, allowing dynamic repositioning between a first position for forward illumination and a second position for downward illumination. This dynamic adjustment enables the downward light to consistently illuminate the ground regardless of which side of the helmet the flashlight is mounted on, eliminating the need for multiple fixed lights.
Solution Approach 2:
The single head unit performs multiple functions by being rotatable between two positions: it can illuminate forward when needed and illuminate downward when needed. This multi-functionality replaces the need for separate fixed forward light and downward light configurations, simplifying the overall device while maintaining versatility.
2Adaptability or versatility
If multiple lights are used to maintain consistent downward illumination on both sides of the helmet, then illumination consistency is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
Instead of using multiple fixed lights, the invention employs a single rotatable head that can dynamically reposition. The head rotates between a first position (forward illumination) and a second position (downward illumination), providing consistent downward illumination on both helmet sides while using only one light source, thereby reducing manufacturing complexity and cost.
Solution Approach 2:
The invention merges the forward illumination function and downward illumination function into a single head unit that can assume different orientations. This consolidation combines what would otherwise require separate light sources and mounting configurations into one integrated component, simplifying manufacturing and reducing costs.
3Adaptability or versatility
If the head is made rotatable between two positions, then illumination direction flexibility is improved, but the attachment mechanism becomes more complex
Solution Approach 1:
The head is coupled to the body through a rotation mechanism that allows the head to rotate between a first position (forward illumination) and a second position (downward illumination). This dynamic coupling enables position flexibility while using a relatively simple rotational joint rather than complex multi-component attachment systems.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables consistent downward illumination regardless of helmet side, reduces manufacturing costs, and ensures effective heat management, making it suitable for military and emergency use.
Implementation Method 1
a power source with a heat sink for efficient heat dissipation
Data Source
AI summary
Flashlights and methods of use. A flashlight includes a body that defines a longitudinal axis and a head releasably attached to the body. The head includes a front light defining a first axis parallel to the longitudinal axis and a downlight defining a second axis perpendicular to the longitudinal axis. A power source assembly disposed within the body comprises at least one battery disposed within a heat sink formed of a thermally-conductive metal material. The head is selectively attachable to the body in either of a first position and a second position. In the first position, the downlight faces a first direction relative to the body and in the second position the downlight faces a second direction relative to the body that is opposite the first direction.